Centuries: 8th century - 9th century - 10th century
Decades: 790s 800s 810s 820s 830s - 840s - 850s 860s 870s 880s 890s
Years: 844 845 846 847 848 - 849 - 850 851 852 853 854
Births
Deaths
... the square[?]. <math>ax^2+bx+c=0</math> Dividing our quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + ...